PRACTICE PAPER 7PRIMARY 3 MATHEMATICS

Answer KeySection A:

1. 4 6. 3 11. 2 16. 3

2. 2 7. 4 12. 1 17. 4

3. 4 8. 1 13. 2 18. 4

4. 4 9. 1 14. 1 19. 3

5. 4 10. 2 15. 2 20. 3

Section B: *Refer to marking scheme.

21. 8 kg 60 g 31. 6.05 pm

22. 6 hr 55 min 32. 32 peaches

23. 33. 18 boxes shaded

24.

6

5 ,

9

4 ,

3

1 34. 2 h 10 min

25. 2 h 37 min – 55 min = 1 h 42 min (M1)

1 h 42 min + 2 h 37 min = 4 h 19 min

(A1)

35.

26. 36. 90 min

27.

12

12-12

5-

12

5=

12

2=

6

1(M1A1)

37.

28. $9 38.

29. 16 39. 1 kg 15 g

30. 2 km 400 m 40. $3 = 12 tickets

$9 = 18 tickets (M2)

10 min

Ans: 5.35 (A1)

6.00 6.10

25min(M1)

Section C: *Refer to marking scheme.

41) $6069.45 - $3125.95 = $2943.50 (M1A1) $6069.45 + $3125.95 = $9195.40 (M1A1)

(a) Siew Min saved $2943.50 more than Selvi. (b) They saved $9195.40 altogether.

____________________________________________________________________

42) 36 x $5 = $180 (M1A1)$308 - $180 = $128 (M1 A1)

The 36 pumpkins cost $128.

____________________________________________________________________

43) 9.30am 10.24 am 11am

18 min 18 min 18 min

11 hr 0 min – 9 hr 30 min = 1 h 30 min = 90 min (M1A1)90 min 5 = 18 min (M1A1)

The fourth plane will leave at 10.24 am.

____________________________________________________________________

44)

Red Orange

= (A1)

1 unit 45 beads (M1)8 units 45 x8 = 360 (M1A1)

Sammy has 360 beads altogether.

____________________________________________________________________

45) WM + TV + RC = $3000TV + RC = $2550WM + TV = $2850

WM $3000 - $2550 = $450 (M1)RC $3000 - $2400 - $450 = $150 (A1)TV $3000 - $450 - $150 = $2400 (M1A1)

x 4

x 4

45